A new convenient way to synthesize 1,3,4-thiadiazol-2-yl urea derivatives under microwave irradiation
作者:Kejian Li、Wenbin Chen
DOI:10.1002/hc.20489
日期:2008.9
A simple and efficient method was developed for the synthesis of 1-(substituted)-3-(5-(substituted)-1,3,4-thiadiazol-2-yl) ureas from heterocyclic amino compounds and phenyl-5-(pyridine-3-yl)-1,3,4-thiadiazol-2-ylcarbamate(2) or phenyl-5-(trifluoro-methyl)-1,3,4-thiadiazol-2-ylcarbamate(5) under solvent conditions using microwave irradiation. The products were obtained in satisfactory yield as we expected
开发了一种简单有效的方法,用于从杂环氨基化合物和苯基-5-(吡啶)合成 1-(取代)-3-(5-(取代)-1,3,4-噻二唑-2-基)脲-3-yl)-1,3,4-thiadiazol-2-ylcarbamate(2) 或 phenyl-5-(trifluoro-methyl)-1,3,4-thiadiazol-2-ylcarbamate(5) 在溶剂条件下使用微波辐照。正如我们预期的那样,产品以令人满意的收率获得。反应可以通过常规加热来实现,但我们发现根据反应时间,微波条件更好。报道了新的 1-(取代)-3-(5-(取代)-1,3,4-噻二唑-2-基)脲衍生物。产物通过1H NMR、ESI-MS和元素分析表征。化合物6h的晶体结构由X射线单晶衍射确定。© 2008 Wiley Periodicals, Inc. 杂原子化学 19:621-629,2008;在线发表于 Wiley InterScience